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On the swap partition: https://ubuntuforums.org/showthread.php?t=2458900

I usually have separate primary partitions for /boot and /, with /home and the swap partition in the extended area.
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Put the logging rule ahead of a reject one like this:


iptables -A INPUT -j LOG
iptables -A INPUT -j REJECT --reject-with icmp-host-prohibited

and put them both at the bottom of the INPUT...

I think everything supports Postscript these days except perhaps for HPs. (I haven't owned one in quite a while.) I actually had to switch my Brother into PS mode to print envelopes properly. Works...

I only hope you learn how to use paragraphs before writing your dissertation.

Since 18.04 /etc/rc.local no longer exists in Ubuntu distributions. However, if you create the file and put commands there, they will work. Under systemd, they want us to create "unit" files.
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I don't understand the first three rules. You permit traffic to the lo interface, then block addresses in 127/8. I doubt the second and third rules are ever reached.

You don't have a logging...

If you give WinXP 1.5 G and leave the rest for the Ubuntu host you should have no problems running on the first machine you mentioned.

I suggest using Rufus on a Windows machine to make the USB device. https://rufus.ie/ A machine that new probably requires GPT.

I have a Brother HL-3710CDW which has wifi. I never use it. I just connected the printer to my local network with an Ethernet cable and gave it a static IP address. Every device can print to it...

You should consider renting a virtual server at Linode and hosting all your websites yourself. I'll bet it would turn out to be a lot cheaper. You can rent a reasonably hefty VM at Linode for...

I suggest you install VirtualBox, then install a copy of 20.04 into a virtual machine. Migrate a copy of your database using mysqldump and copy over a website that uses PHP. Do they still work the...

So many of the newer top-level domains are so heavily exploited by spammers that I block incoming mail from them. I'd try to stick to net, com, or org if I were you.

If you have the Extension Pack installed, you'll have access to "Shared Folders" in the Settings for the virtual machine. It will allow you to specify a directory on the host machine that you can...

I follow the instructions on the VirtualBox site to use the Oracle repository. My installation is always up-to-date, and I don't have issues with compiling the kernel module.
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I'd get rid of the rsize and wsize parameters, or increase them considerably to something like 65536. The value of 8192 was established back when most networks ran 10MBit Ethernet.

You can tell apt not to upgrade a package with the command

sudo apt-mark hold packagename

I don't know how this applies to upgrading to an entirely new release using dist-upgrade.

See the...

I find DLNA just as stutter-free as NFS even over wifi. I prefer NFS, but there are fewer clients.

If the mount point is owned by nobody, ordinary users cannot write to it. Try exporting a directory you own on the server like /home/username. Can you mount that?

NFSv4 has some additional...

There isn't anyone between me and the DNS server; that was my point. I generally don't have other people on my wifi network either, and those that do connect have no interest in my DNS queries.
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As I recall, iptables rules can be written to the kernel before the relevant devices are created. On older RedHat machines, the iptables script would be run before the network was started to avoid...

All my DNS queries go to a server on my local network running BIND. From my reading of this discussion, encrypting DNS only affects the traffic between the client and the DNS server. As a result I...

My Yamaha receiver has a bunch of preset audio profiles. I can also control the level of each speaker. Sometimes I'll make the center channel much louder than the sides, then turn the overall volume...

Having read your preceding posting, I'd examine the DHCP reservations.

There might be "reservations" on the DHCP server, stale mappings between MAC addresses and IP addresses. If the addresses are assigned by a Linux server running isc-dhcp-server, you can delete...

Yes, if you connect a computer to the modem's Ethernet jack, you will be directly on the public Internet. I prefer to have a router between the Internet and my internal network, but it is possible to...